5) Brewing group lever : 
            When you insert wooden knob into the shaft, please try to insert by following the thread smoothly.
            Even if the knob do not go into the shaft easily at first, please do not push it with force.
            Then, pull it back and insert it again by following the thread smoothly.
            That's why wooden thread may crumble by force. 

   6) Finishing : 4~5 times applied with 2~3 kinds of German premium natural oil.  
            In order to achive higher durability against water and heat, we put much efforts 
            with handmade process.  You can also take luxury touch feeling with fignertips.    
            We do not apply on our wood products with chemical finishing materials like urethane
            which contains harmful components.        
            Of course, natural oil is more expensive and need much manual labor for repeated
            applying.  We want to sell the right products finished with natural oil than urethane.   

   7) There are somewhat distribution of wood grain & color due to natural material. 

Separation original portafilter handle : 

    1) It's just very hard to separate original rubber/plastic handle from group head by only manual or tool force.
         Solution1) Do heat up the group head for 1~2 hours enough on machine.
         Solution2) Do heat up the group head on the gas range, holding handle with wet towel, in order to vaporize
                           instant glue that might applied between head and bolt.
         --> Solution1) is recommend than Solution2). That's why Solution2) may occur some soot on head by flame.